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nat: Send a RLSD to the network for connections belonging to the BSC

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Sending a RLSD with SCCP failure makes the MSC free all the resources
(MGCP, audio channels), right now we are ignoring the RLC we get from
the network and print a unhandled message.
This commit is contained in:
Holger Hans Peter Freyther
2010-04-06 17:32:58 +02:00
parent f464ea54d1
commit 6b087d18f5
1 changed files with 27 additions and 1 deletions
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28
openbsc/src/nat/bsc_nat.c
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@@ -127,6 +127,32 @@ static void send_id_req(struct bsc_connection *bsc)
bsc_write(bsc, id_req, sizeof(id_req));
}
static void nat_send_rlsd(struct sccp_connections *conn)
{
struct sccp_connection_released *rel;
struct msgb *msg;
msg = msgb_alloc_headroom(4096, 128, "rlsd");
if (!msg) {
LOGP(DNAT, LOGL_ERROR, "Failed to allocate clear command.\n");
return;
}
msg->l2h = msgb_put(msg, sizeof(*rel));
rel = (struct sccp_connection_released *) msg->l2h;
rel->type = SCCP_MSG_TYPE_RLSD;
rel->release_cause = SCCP_RELEASE_CAUSE_SCCP_FAILURE;
rel->destination_local_reference = conn->remote_ref;
rel->source_local_reference = conn->patched_ref;
ipaccess_prepend_header(msg, IPAC_PROTO_SCCP);
if (write_queue_enqueue(&msc_con->write_queue, msg) != 0) {
LOGP(DINP, LOGL_ERROR, "Failed to enqueue the write.\n");
msgb_free(msg);
}
}
static void send_mgcp_reset(struct bsc_connection *bsc)
{
static const u_int8_t mgcp_reset[] = {
@@ -354,7 +380,7 @@ static void remove_bsc_connection(struct bsc_connection *connection)
if (sccp_patch->bsc != connection)
continue;
#warning "TODO: Send a RLSD to the MSC. Or at least a clear command."
nat_send_rlsd(sccp_patch);
sccp_connection_destroy(sccp_patch);
}